Coating composition



Patented Dec. 20, 1932 UNITED STATES PATENT OFFICE JOHN FELTER, OF HAVEBSTBAW, NEW YORK COATING COMPOSITION No Drawing. Application filed Kay 27, 1931. Serial No. 540,517.

This invention relates to compositions for the compound to render the said compound a covering floors, and the interior and exterior homogeneous mass. walls of buildings, and has in view the pro- A substance which possesses the desired vision of a water-proof and fire-resistant c omproperty of rendering thefinely-divided cel- 1 position. lulose material impervious to water. and J Another object in view is the provision of which is non-reactant to magnesium chloride a magnesia base composition which is resistso that the cellulose material may be coated ant to aqueous detergents and which will not therewith, is liquid isomer mono-chlor-naph' leach out when subjected to repeated applithalcne. This substance will not support cations of hot or cold'water or cleansing solucombustion, has ability to penetrate the inner 60 tions. fibers of the finely-divided cellulose material The composition consists of a mixture of to render the same water-proof, and will finely divided cellulose material which has quickly evaporate from the surface of the been pretreated to render it water-proof; cellulose material to permit the finely-dividpowdered inert mineral material, such as talc, ed material to be coated with the magnesium clay, silex, decomposed silica and sand; fichloride with a consequent bonding or keybrous material, such as asbestos; calcined ing-in of the said material in the-composimagnesite, and an aqueous solution of magtion. This prevents the cellulose material nesium chloride. The aqueous solution of from becoming isolated in the composition magnesium chloride reacts with the calcined and floating to the top when in plastic conmagnesite to form solid magnesium oxychlodltlOllride which renders the plastic mass. a hard T 531d eomposltloh formed 'Wlth composition with'the evaporation of the exheel as h and ehemleeuy treated eelhl C885 Water content lose material may be used as an under-coat- Unless the cellulose material is firmly bondfor flooring and as finished coating of ed with the magnesium-chloride, nascent hyh same basic composition with i e h' drochloric acid is formed in the presence of tloh ha less of the cellulose materml 15 hot or cold water or eleansingsolutions which Posed in e finished materiel- It y 91150 attacks the composition by dissolving the unbe used feimtemor wall coetmgs and outslde combined magnesium chloride content with Wall Stucco hga and h 50 used the 80 the consequent f ti f cracks or i cellulose content 18 substantiallythe same as and causing the composition to lose its color. the fimshed h eeetlhg- Furthermore, the cellulose material will ab- P p a base floor g, app sorb water permit ting decomposition to set in. metely 18 F cent of cellulose metel'lelfiuch The present invention overcomes this disinas -l s fi ,treeted y p y g the tegrating action of the composition in the ddstliled lsomer mono'chlor'naph" presence ofhot or cold water and cleansing thalene whmh 1S allowed to evahomte from solutions, by impreg ating the cellulose-maz of ti cellulose mammal i then 4o terial with a water-proofing material which mlxesgostantmuy state wlth is non-reactive to a solution of magnesium g f g' gg cent z i% chloride. The aforesaid impregnating matep app oxlma y Per rial is volatile and free from dissolved solid 3 2: 8; aiggfi g ggg g z? :53 61 3;

bodies so that it will readily evaporate from ingrgdiens are u hl i d ii, a d

the outside surface of the finely-divided cellut t d th d c d t l ti 95 lose material, leaving the said material in its ti by a l ti n of agn siu chlorid t6 natural condition to absorb and become coata conslsten'cy that may be troweled or spread ed with the magnesium chloride solution to inposition. When the solution of magnesium,

render the same ifire-proof and providing a chloride is addedtothe dry mixture, achemiw bonding agent with the other ingredients in cal reaction takes place with the calcined mately ly 6 per cent of-the finely-di'vi magnesite, the resulting com ound hardening upon the evaporation of t e excess water content.- The surf ace of-the cellulose mate-v rial being substantially in its natural statewill absorb' some of the magnesium chloride solution which by .virtueof the corrosive properties thereofwill cause a disintegrating action upon the sawdust to render the same fire-resisting and which will act as a coating agent to bond the cellulose material in the composition upon hardening.

preparing the composition for a finished floorin approximately 6,per cent of the finelyivided cellulose material is retreated y spraying the. same with dist' 'ed isomer mono-chlor-naphthalene which is allowed to evaporate from the surface of the cellulose material, andis 'then mixed with approxi- 45 per cent of calcined'magnesite; 2.5 per cent of asbestos; 34 per cent of talc, decomposed silica, clay, silex or sand, and 10 per cent of coloring material. The dry mixture is then made plastic'by a solution of magnesiumchloride, as hereinbefore de' scribed, .which combines with the calcined magnesite' to form a chemical compound which will harden on evaporation of the excess water. I

Plastic and stucco composition for the walls of buildings are combined in the same way; the proportions used are a proximateed cellulose magnesite; per cent of material; 22 per cent of calcined 4 per cent of asbestos, and 68 sand and silex. e stucco composition has a slightly larger sand andsilex constituent, approximately 70 per cent, with slightly less magnesite, approximately 20 cellulosematerial, such as sawdust or flour of sawdust, is pretreated, as herembefore described, which renders the same waterproof and fire-resistant. Attention is directed to my prior applications, Serial Nos. 312,933, 312,934, 312 935 filed Oct. 16, 1928; Serial No. 384,242 filed Aug. 7, 1929 and Serial Nos. 390,851, 390,852, 390,853 filed Sept. 6, 1929. I

claim: p 1. A coating composition comprising powdered mineral material, mineral fibrous material, calcined magnesite, and a finely-divid ed cellulose material pretreated with a volatile non-inflammable water-proofing material free from dissolved solid bodies, the said materials being mixed in a dry state and rendered plastic by a solution of magnesium chloride. 2. A coating composition comprising powdered mineralmaterial, mineral fibrous material, calcined magnesite, and finely-divided cellulose material impregnated with a volatile non-imflammable water-proofing material free from dissolved solid bodies, the said materials being mixed in a dry state and rendered lastic by a solution of magnesium chloride.

3. A coating composition com dered mineral material, mineral rial, calcined magnesite, nated'with a volatile no -infl ammable waterproofing material free from dissolved solid bodies which has been allowed to evaporate from the surface of the sawdust, the said materials being mixed together in a dry state and reduced to a plastic composition by a solution of magnesium chloride.

4. A coating composition comprising mineral material, calcined magnesite, finely-divided cellulose material impregnated with mono chlor-naphthalene and evaporated from the surface thereof, and a solution of magnesium chloride.

coating composition comprising mineral material, calcined magnesite, finely-divided cellulose material, each particle thereof being saturated interiorly with monochlor-naphthalene and substantially free exteriorly thereof, and a solution of magnesium chloride.

JOHN FELTER.

rising powbrous mateand sawdust impreg- 

